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Building A DIY Wideband Setup

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Hello everyone, I hope you're doing well. I am currently building a DIY CJ125 Wideband controller as the other options are way too expensive to buy in Pakistan. But, I have ran into a hiccup in this equation. I am confused on which 02 sensor to buy.

The Bosch LSU 4.9 is the cream of the crop as they say. But again, too expensive. I've been thinking about a cheaper alternative, and the first thing that comes into my mind is just using an 02 sensor from another car (mine is carbureted). And try to run that, but there isn't a definitive answer to whether that will work or not. Any help will be greatly appreciated!

High volume LSU 4.9s are one of the least expensive wideband sensors available. Search around for better sources.

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